//
//  UserAccount.swift
//  微博
//
//  Created by mac on 15/12/15.
//  Copyright © 2015年 itcats. All rights reserved.
//

import UIKit

class UserAccount: NSObject,NSCoding {
   
    var access_token:String?
    var expires_in:NSTimeInterval = 0 {
        didSet {
           
            expires_date = NSDate(timeIntervalSinceNow: expires_in)
        }

    }
    //token过期日期
    var expires_date:NSDate?
    //当前授权用户的UID
    var uid:String?
    //友好显示名称
    var name:String?
//用户头像
    var avatar_large:String?
    //KVC给对象设置初始值
    init(dict:[String:AnyObject]) {
        super.init()
        self.setValuesForKeysWithDictionary(dict)
    }
    override func setValue(value: AnyObject?, forUndefinedKey key: String) {
    }
    //只读属性
    override var description:String{
    let keys = ["access_token","expires_in","uid","name","avatar_large","expires_date"]
    return dictionaryWithValuesForKeys(keys).description
    }
    //保存自定义对象
    func saveAccount() {
        let path = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as NSString).stringByAppendingPathComponent("account.plist")
    
        //保存自定义对象
        NSKeyedArchiver.archiveRootObject(self, toFile: path)
    }
    
    class func loadAccount() -> UserAccount? {
    //从磁盘中接档数据
        let path = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as NSString).stringByAppendingPathComponent("account.plist")
        if let account = NSKeyedUnarchiver.unarchiveObjectWithFile(path) as? UserAccount{
            if account.expires_date?.compare(NSDate()) == NSComparisonResult.OrderedDescending{
            return account
            }
            
        }
        
        return nil
    }
    //解档操作
    required init?(coder aDecoder:NSCoder) {
        access_token = aDecoder.decodeObjectForKey("access_token") as? String
        expires_in = aDecoder.decodeDoubleForKey("expires_in")
        uid = aDecoder.decodeObjectForKey("uid") as? String
        avatar_large = aDecoder.decodeObjectForKey("avatar_large") as? String
        name = aDecoder.decodeObjectForKey("name") as? String
        expires_date = aDecoder.decodeObjectForKey("expires_date") as? NSDate
    }
    //归档
    func encodeWithCoder(aCoder: NSCoder) {
        aCoder.encodeObject(access_token,forKey: "access_token")
        aCoder.encodeDouble(expires_in, forKey: "expires_in")
        aCoder.encodeObject(uid, forKey: "uid")
        aCoder.encodeObject(avatar_large, forKey: "avatar_large")
        aCoder.encodeObject(name, forKey: "name")
        aCoder.encodeObject(expires_date, forKey: "expires_date")
    }
    
  
}
